LibreOffice is a free and open-source office suite that is compatible with other major office suites, and is available on all operating systems. It is an independently-developed version of the OpenOffice.org suite.

LibreOffice - Calc , a spreadsheet program, similar to Microsoft Office Excel . It has a number of unique features, including a system which automatically defines series of graphs, based on information available to the user.

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CommercialWeb / Cloud

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Alternatives to LibreOffice for Windows, Android, Linux, Web / Cloud, Mac and more. Filter by license to discover only free or Open Source alternatives. This list contains a total of 37 apps similar to Dropbox.

How I'd love Microsoft to be overthrown

This suite is the closest to overthrowing MSOffice. You can save Calc and Impress Files under word formats and they will pass over with precisely 0 problems. Excel to Libreoffice may be problematic. Also, Calc has no auto-calculate facility, but a basic hand-held calculator is much cheaper and easier to use than Excel.

LibreOffice 4.4.3

I deleted LibreOffice and went back to WPS Office 2014, an older version (9.1.0.4758) which was the last release before it went to a freemium product. Libre is slow as molasses, especially when starting cold. The developers could cut the execution time considerably by making the install more optional, such as only installing the writer and spreadsheet, instead of the whole suite...or making a stand-alone writer...but they've never had any interest in doing this. WPS Office, even with its three programs, is lightening fast and still the most compatible with Microsoft documents. Libre's recent face-lift is an improvement, but WPS Office still wins in speed, interface, and compatibility.

Ok... I was hoping for some details since I've been thinking of mass deploying it on Macs version 10.6+ through out the organization I work for. Maybe I've just been lucky stability wise since I'm using a new Macbook Pro with 10.8.5.

I love competition

I so wish something would dethrone the reining king of Office suites, MS Office 2010. It needs to get some major loss in market shares to actually create innovation instead of the cycle of patching UI re-releases.

I'll applaud it with all my vigour to see alternatives such as LibreOffice, Google Docs, KOffice & Kingsoft Office. Microsoft Office, while decent & has held back office suites by culling the competition through strong arming the business world into using it. LibreOffice is still in its infancy but with updates such as 3.5.0 we can see that given time they'll become worthy of standing up to the doom fortress Microsoft has carved over the years.

Ugly Mac icon

This comment is just a random thought: the Mac icon for LibreOffice is really ugly. Yes, it's the same icon as on Windows. But it just doesn't look right on the Mac. especially when you compare it with the icons for Apple's default apps, or even with other 3rd-party Mac apps. My biggest complaint would probably be that the icon is too big; it's noticeably larger than any other icon on my dock, and it doesn't help that 90% of the icon is just plain white. So yeah, it's a bit of an eyesore.

LibreOffice looks the exact same as OpenOffice.org

LibreOffice looks the exact same as OpenOffice.org, so don't expect some magical intensification of your daily productivity when you switch. The Document Foundation has only added a few small features, most of which work in the background, to the original OpenOffice.org suite (so far).

well... actually it is not a fork but a real OpenOffice.org ...

well... actually it is not a fork but a real OpenOffice.org... it seams that developers of open office decided to create LibreOffice after Oracle bought Sun Microsystems... details here: http://www.documentfoundation.org/faq/

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